R. Reissig

Periodic solutions of certain higher order differential equations

R. Reissig, 1978 .

Non-Linear Differential Equations of Higher Order

Roberto Conti, R. Conti, G. Sansone, 1974 .

Periodic solutions of a third order nonlinear differential equation

R. Reissig, 1972 .

Extension of some results concerning the generalized Liénard equation

R. Reissig, 1975 .

Periodic solutions of a second order differential equation including a onesided restoring term

R. Reissig, 1979 .

A Perron-like stability criterion for linear systems

R. Reissig, 1980 .